US3516950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamed polymers
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1969-02-25
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Granted: 1970-06-23
•
Expires: 1989-02-25
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey Arthur Haggis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:15
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/02; C08G18/022; C08G18/06; C08G18/08; C08G18/09; C08G18/092; C08G2110/00; C08G2110/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3072582A
Cited
GB843841A
Cited
US2978449A
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US2993870A
Cited
US3179626A
Cited
US3218372A
Cited
US3144452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |